As Tesla Inc. shares slumped to their worst performance on record in the fourth quarter, the electric-vehicle company delivered fewer cars than analysts expected, according to a Monday announcement.

By using something called a quantum grid, scientists have found a clever way to simultaneously measure momentum and position ...

President Donald Trump’s approval rating declined one point in a Reuters/Ipsos poll released Tuesday—hours after Trump claimed he has the “highest poll numbers [he’s] ever had”—keeping his rating ...

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